Magazine lead pencil



Sept. 26, 1933. A. WOELM 1,928,042

" MAGAZINE LEAD PENCIL Original Filed Sept. 16. 1922 3/ so 3? 2 z 24 54/8 /8 38 5 I6 37 INVENTOR. v M

Mn. 7 7 ATTORNEYS.

Patented Sept. 26, 1933 a MAGAZINE LEAD PENCIL Alfred Woelm, Berlin,Germany, assig'nor, by mesne assignments, to Pencil MechanismCorporation, a corporation of New York Original application September16, 1922, Serial No. 588,688, and in Germany July 21, and

7 August 5, 1922. Divided and this application March 31, 1927. SerialNo. 180,000.

13 Claims. (Cl. 120-17) This invention relates to a magazine lead stripof lead contained in the guide tube and holdpencil which is adapted tocontain a large numit resiliently in position. ber of strips of leadwhich are successively Upon the central guide-tube 6 is slidably broughtinto operative position by means of a mounted a sleeve 14, in which isfulcrumed at 16,

device which allows the lead strip in use for the by means of a clip orstrap 15, a double armed 60 time being to be fed forward by a definitelength; lever (or leverssee Fig. 6) 17-l8. The lower this presentapplication being a division of my 00- arm 17 of this lever is at itsinner face provided pending application Serial No. 588,688, filed withteeth 17-T, while the other arm 18 ful- September 16, 1922. crumed at 16contacts with the inclined or cone My improved magazine lead pencil isillusshaped bottom of the collar 23. Slidable upon 65 trated in theaccompanying drawing, inwhich: the sleeve 14 is mounted a collar 23. Aspring 26 Fig. 1 is a side view of my improved pencil; normally forcessaid collar downward, and a suit- Fig. 2 is a view of the lower portionof my penable pin or ridge 31 limits the upward movement oil, at rightangles to Fig. l; of the collar 23 upon the sleeve 14.

Fig. 3 is a longitudinal section through my pen- Suitable slots areprovided in both the sleeve 7 oil on an enlarged scale; 14 and centralguide-tube 6, to permit the passage Fig. 4 is an elevation of thefeeding mechanism of the toothed end of the lever-arm 17, so that thewith the operative parts in a different position; spring 26, forcingdownward the collar 23, may Fig. 5 is a detail showing a manner ofjoining force the upper end of the lever arm 18 outward,

the two parts of the holder; and the lower arm 17, on which are theteeth 75 Fig. 6 is a longitudinal section, parts broken 17--T, towardand into gripping contact with away, through a modified form of myinvention; the lead strip. A spring 32 normally tending to Fig. 7 is anelevation of the modified feeding retract the lever arm 17 is in thiscase attached to mechanism, at right angles to the section shown the armitself.

in Fig. 6. A I may use a single double arm lever and a lead The samereference charactersrefer to the abutting strip 21 carried in the sleeve14, as illussame parts throughout the several views. trated in Figs. 3and 4', but I now prefer to make As in the original application, supra,my imuse of a pair of such arms, disposed on opposite proved pencilcomprises a tubular holder termisides of the lead, as illustrated inFig. 6.

30 nating at one end in a conical mouth piece 2 and In order to insureproper sequence in the moveas closed at the other end by a cover orcap3. The ment of the parts of the feeding mechanism, 1 strips of lead arecontained in a compartment 4 have provided a spring 36, fastened to anonof the holder and form a bundle. Thegottom of moving part 9 of themechanism, and having this compartment is formed by a dish 5 Xed uponthe free end 38 thereof in contact with a the upper end of a centraltube 6 serving as a projection (or a depression) 37 formed on 90 u d forthe individual strips of T e O (or in) the sleeve 14. The function ofthe spring tom 5 0f the C pa 4 Slopes a s a n- 36 being to offerresistance to the longitudinal tral outlet 7, so that the strips of leadhave a tendmovement of th sleeve 14, so th t friction ency to c wtowards the center and the strip between the sleeve 14, double-armedlevers 1'z 1s 40 situated in the middle of the bundle enters into and t11 '23 may t commence th 1 95 the outlet 7. gitudinal movement of thesleeve 14 upon the At lts lower end the central gmde tube 6 1s centralguide tube 6 before the springs 32 Provided with Screw-thread 8 by means0f which have operated to withdraw the toothed end of it is screwed intothe tapped upper portion of a the lever 17 from contact with the leadstrip,

5 sleeve 9 which is of conical shape and fits into when the trigger 30is forced upward, or before the conical mouth piece 2 of the holder orhandle the wedgmg action of the cone 24 has overcome of piece 10, whichis screwed by a male screw-thread toothed end s of the levers mtecontact Wlth at its upper end into the female screw-thread 11 the leadStnps when the spnng reverses the 105 in the lower portion of the sleeve9 and abuts with motlon of the and forces downwarda shoulder against themouth piece 2 of the The use Of the tension Spring 3 msures a leadholder forming a continuation of the same. The feed equal to the o u almovement of the guide-tube" 6 is at its lower end provided with Sl ve 14up n he tube 6.

jaws 12 and 12", Fig. 3, which close upon the The operation of themechamsm which effects 110 the advance of the lead takes place asfollows; reference being had to Fig. 3 of the drawing:

The writing position of the parts are illustrated in Fig. 3 (also inFig. 6), and the advancement of the lead is accomplished by simplyforcing upward the trigger 30, which causes a like movement of thecollar 23 of which it forms a part, and compresses the spring 26. As thecollar 23 commences its upward movement, the cone surface is withdrawnfrom under the inclined end of the arm (or arms) 18, and the spring 32retracts the toothed end of the lever 1'7 until it is out ofcontact-with the lead. The collar 23 then reaches the upward limit ofthe movement longitudinal on the sleeve 14, and contacting with thelimiting device 31, its further upward movement carries with it thesleeve 14 and the double-armed levers pivoted thereto, until it reachesthe limit of its upward travel. The trigger being then released thespring 26 reverses the movement of the collar 23, and due to theresistance of the spring 36 the first movement of the collar 23 downwardwill not move the sleeve, but will cause the levers 1'7 to again gripthe lead, and its continued downward movement thereafter will carryforward the lead as far as the limits of the mechanism will permit.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. In a lead pencil, the combination of a tubular holder adapted tocontain strips of lead, a cap at one end of said holder and a conicalmouth piece at the other, a further cylindrical magazine for strips oflead disposed within said holder,- a bottom in said magazine and saidtubular holder which slope towards a central opening, a guide-tube forleading said lead strips from the lower of said central openings to saidmouth piece, a slidable sleeve upon said guide-tube, a double-armedlever fulcrumed upon said sleeve, one arm of which is adapted to engagethe lead in said guide-tube, a spring tending to raisesaid arm off saidlead, a slidable bevelled collar upon said sleeve adapted to cooperatewith the bevelled end of the other arm of said lever, a spring disposedbetween said collar; and the bottom of said holder and tending to keepsaid collar and the bevelled face on the lever arm in engagement and theother arm of the lever down upon the lead in said guide-tube, a triggerupon said collar adapted to project through a slot in said holder and apin upon said sleeve adapted to be engaged by said collar and to becarried along by it when said trigger is pulled away from said mouthpiece.

2. In a lead pencil, the combination of a tubular holder consisting oftwo fitted-together parts, one part adapted to contain a store of stripsof lead and the other the feeding device for said strips, a cap at oneend of said holder and a conical mouth piece at the other, a furthercylindrical magazine for strips of lead disposed within the magazineportion of said holder, bottoms in said magazines which slope towardscentral openings, a guide tube for leading said lead strips from thelower of said central openings to said mouth piece, a slidable sleeveupon saidguide-- tube, a double-armed lever fulcrumed upon said sleeve,one arm of which is adapted to engage the lead in said guide-tube, aspring tending to raise said arm ofi said lead, a slidable bevelledcollar upon said sleeve adapted to engage with the bevelled end of theother arm of said lever, a spring disposed between said collar andthebottom of said holder and tending to force said bevelled collaragainst the bevelled arm of said lever and the other arm of said leverin engagement with the lead in said guide-tube, a trigger upon saidcollar adapted to project through a slot in said holder and a pin uponsaid sleeve adapted to be engaged by said collar and to be carried alongby it when said trigger is pulled away from said mouth piece.

3. In a lead pencil, the combination of a tubular holder adapted tocontain strips of lead, a cap at one end of said holder and a. conicalmouth piece at the other, a bottom in said tubular holder I which slopestoward a central opening, a guidetube leading from said opening to saidmouth piece, a sleeve slidable upon said guide-tube, a double-armedlever fulcrumed in said sleeve, a collar mounted on said sleeve so as tohave a limited longitudinal movement thereon, superimposed slottedopenings in said guide-tube and said sleeve adapted to pass the lowerarm of said lever, a spring normally tending to withdraw said arm fromsaid openings and a spring normally tending to force said, collarbetween the upper arm of said lever and said sleeve so as to force thelower arm of said lever through said 1 slotted openings.

4. In a lead pencil, the combination of a tubular holder adapted tocontain strips of lead, a cap at one end of said holder and a conicalmouth piece at the other, a bottom in said tubular holder 1 which slopestoward a central opening, a guidetube leading from said opening to saidmouth piece, a sleeve slidable upon said guide-tube, a double-armedlever fulcrumed in said sleeve, a collar mounted on said sleeve so as tohave a 1 limited longitudinal movement thereon, superimposed slottedopenings in said guide-tube and said sleeve adapted to pass the lowerarm of said lever, a spring normally tending to Withdraw said arm fromsaid openings; a spring normally tend- 1 ing to force said collarbetween the upper arm of said lever and the said sleeve so as to forcethe lower arm of said lever through slotted openings; and means forretarding the free movement of said sleeve upon said guide-tube ineither direction.

5. In a lead pencil comprising means providing a magazine, a tip, andmeans to guide strips of lead from said magazine to said tip, thecombination of mechanism to cause strips of lead to be advanced to saidtip by a step-by-step move-- ment; said mechanism including grippingmeans comprising. one or more jaws each provided with a lead grippingsurface andarranged for movement toward and away from said tip and formovement of ,said lead gripping surface .out of and into contact withthe lead, means comprising ranged to normally maintain said grippers inen- 5 gagement with a lead in the pencil and when reciprocated to impartmovement to said grippers and to press said grippers against a leadduring the major part of their downward movement, and resilient meansadapted normally to press said longitudinally movable member againstsaid grippers.

7. In a step-by-step lead pencil, a longitudinally movable member, aplurality of longitudinally movable lead-gripping jaws, a springpressedmember acting normally to cause said lead-gripping jaws to grip a leadtherebetween for writing purposes, and means to reciprocate said jaws inresponse to the movement of said longitudinally movable member.

8. In a step-by-step lead pencil, the combination 01' a longitudinallymovable gripper-supporting element, a plurality of grippers rockinglysupported on said element, operating means to reciprocate said grippersand to cause the grippers to grip and release a lead in the pencil atdifferent points in their cycle of movement to propel the leadstep-by-step through the pencil, and exteriorly accessible means toactuate said operating means.

9. In a magazine pencil including a casing, a plurality ofrockingly-mounted lead-gripping and propelling elements formed withcooperating jaw portions each movable inwardly against a lead in thepencil, and operating mechanism for said leading-propelling elements.

10. In a step-by-step pencil including a casing, alongitudinally-movable lead-gripping unit including a plurality ofoutwardly spring-pressed jaws, a longitudinally-movable spring-pressedoperating member tending to thrust said jaws toward each other andagainst a lead in the pencil in opposition to their springs, andexteriorly accessible means for moving said operating member inopposition to its spring.

11. In a step-by-step pencil including a casing, a plurality oflongitudinally-movable grippers outwardly spring pressed, alongitudinally-movable gripper-operating member, resilient means tendingto press said operating member against said grippers to hold them inclosed position, 'exteriorly accessible longitudinally-movable means foractuating the gripper-operating member,

-means to limit the forward movement of the grippers, and means to limitthe rearward movement of the grippers before the end of the rearwardmovement of the gripper-operating member.

12. In a step-by-step pencil, a slotted lead guide tube, a plurality ofoutwardly springpressed grippers formed with cooperating jaw portionsadapted to extend within the slots in the guide tube to grip a leadtherein, said grippers and said tube being mounted for relativelongitudinal movement, a gripper-operating member longitudinallyslidably mounted with respect to said guide tube and said grippers, aspring normally acting longitudinally of the pencil to hold saidgripper-operating member in jaw-closing position, and actuating meansforcausing relative longitudinal movement of the parts and for compressingsaid spring to permit the release of said jaws.

13. In a step-by-step pencil, a slotted lead guide tube having alead-holding portion at its lower end, a plurality of outwardlyspringpressed grippers formed with cooperating jaw portions adapted toextend within the slots in the guide tube to grip a lead therein, saidgrippers and said guide tube being mounted for relative longitudinalmovement, a gripper-operating member longitudinally slidably mountedwith respect to said guide tube and said grippers, a spring normallyacting to press said operating member downwardly to hold saidgripper-operating member in jaw-closing position, and actuating meansfor causing relative longitudinal movement of the parts and forcompressing said spring to permit the release of said jaws.

ALFRED WOELM.

